258 FLORA 1NDICA. have not had access to any of them, Mr. Bitchie; a Bombay officer, we helieve formed a good herbarium in the mountains south of Jellalabad (the Safed Koh), which Griffith appears to have seen, but none of the specimens have found their way into our herbaria. EXPLANATION OF THE MAPS. MAP I.—To face page 82 of Introductory Essay. The Map of Isothcrmals for January, April, July, and Octo her, is intended to illustrate the chapters of the introductory Essay devoted to the Meteorology of India (page 74), and of the provinces into which we have divided that country (page 115). It is compiled (by permission) from the maps of monthly Isothermals which accompany Dove's admirable wort " Oa the Distribution of Heat over the surface of the Globe," as translated by Colonel Sabine, and published by the British Association for the Advancement of Science. MAP II.—To fee placed at the end of the Introductory Essay. The boundaries and names employed in the Map of India divided into ?* ovinces, have been partially explained at page .88: it remains to add a few words on our representations of its mountain and river systems: As regards rivers, we find these to be represented in most maps as being equally numerous, and of as great volume, in some of the most arid, as they are in the most humid pro- vinces. This arises from the fact that the larger maps are in TOiany cases made up from local surveys, and their component parts have hence no relative value, In an arid country like Bajwana every streamlet carrying water for a few days in th<?